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Scuba
S.C.U.B.A. = Self Contained Underwater Breathing Apparatus. Here is all the information you need to learn and be safe while enjoying this great sport. Explore the last frontier and uncharted depths in the S.C.U.B.A. category.
999 Questions
Why do deep-sea divers have to wear a strong diving suit?
Deep sea divers wear diving suits in order to prevent their body by the harmful effects of maximum pressure at greater depth in seas and ocean.
How often should you take your scuba tank to be visibly inspected by a dive center?
In the US, they recommend once per year.
In Europe, they recommend once every two and a half years (ie. half the time between hyrostatic tests).
My personal view (as a former tank inspector for a dive shop) is that unless you have reason to believe the tank is contaminated, visual inspections are a complete and utter waste of time.
Why would a balloon expand as it rises underwater?
Archimedes' principle: an object experiences a lifting force (buoyant force) equal to the weight of the fluid being displaced by the object.
Helium (He)and hot air are lighter than the normal air near the ground level. If the balloon is filled with He or heater air, near the ground level, the normal air that the balloon displaced has a heavier weight that the weight of He or hot air inside the balloon. The net force is up, assuming the balloon itself is weightless (the balloon fabric is so thin that the weight is negligible). When the balloon reaches the upper atmosphere where the surrounding air is as light as the hot air, the balloon will stop ascending.
What would you see if you went scuba diving?
Many different types of marine life you will expirence if you go scuba diving.
It really depends what part of the world you go scuba diving in. Which will effect the type of things you see.
What is the maximum depth limit for an open water diver?
Most sport divers do not venture much below 100ft. Preparations for dives below this depth are more involved and bottom time is severely limited.
People scuba dive because it enables them to stay underwater much longer than they would be able to do so without breathing apparatus. SCUBA stands for self contained underwater breathing apparatus. It is different from surface feed or Hooka diving where air is pumped down because it gives you more freedom. People have been able to hold their breath for up to 8 minutes but when you move about you can only hold your breath a short time. Taking an air supply means you can spend a long time underwater without being restricted by an air pipe from the surface.
Scuba means self contained breathing apparatus and it was actually a bit lighter in the past than today because divers tended not to wear dry suits and had lower pressure air tanks.
I think you are referring to standard dress, heavy dress or hard hat diving suits. These had big brass helmets and heavy weighted boots. The helmet displaced many litres of water and the suit contained air too, As a result the helmet was heavy as were the boots and divers often put additional chest weights on. The all up weight of the suit, boots and helmet was well over 80kg. People who used these suits stood on the floor to work, so even more weight would sometimes be used to help with some tasks. Standard dress as it is known is not used very much in the West and are generally only kept by collectors but is still used in Asia for commercial diving work.
80 kgs or about 170 lbs
Where can one find scuba diving cameras?
Many scuba stores sell scuba diving cameras. Check a scuba gear stores in your area. This will allow you to compare cameras and get advise from fellow scuba divers.
How deep can someone dive with one breath?
William Trubridge, 29, won the Vertical Blue free immersion competition at Dean's Blue Hole on Long Island in the Bahamas.
Wearing a specially designed silicon-coated wetsuit, he spent 4 minutes, 9 seconds under water without the aid of oxygen, using a unique form of breast stroke to propel himself and claim the record
Another free diver recently set the record for holding his breath at more than twenty minutes......
What thickness wetsuit do you need for scuba diving?
For UK diving you may still want to vary the thickness of your gear, depending on the water temperature, but for footwear, thicker is better than thinner as it will get a rougher time than most of your suit. I would say 3mm at least.
People who dive are usually just referred to as divers. You can break them up into roughly four categories:
Skin divers - who hold their breath, and do not use scuba equipment. Also sometimes called free divers.
Sport divers - who dive for fun (they used to be called 'recreational divers', but now this term is used to distinguish sport divers from 'technical divers' who also dive for fun, but dive outside of WRSTC 'recreational' limits).
Commercial divers - who dive for their jobs. By convention, this excludes recreational diving instructors, to differentiate from commercial divers who use equipment underwater, engage in saturation diving and use of elaborate gas mixes.
Military divers - who form a sub-set of the navy.
Not all divers fit neatly into these categories (police divers, rescue divers, fisherman who dive for their catch), but those tend to be the broad categories used.
Why do people like deep sea diving?
People prefer deep sea fishing because the hype and popularity deep sea fishing enjoys, normal fishing does not. Since there is hardcore prerequisite training that you may need so people find it more rewarding, interesting and smart to try it within deep sea. It truly is an experience of its own. You hire a yacht charter and there is whole lot of professional staff to assist you with fishing expriecne. Since all the precautions are taken care of already, people find it easy to carry themselves and enjoy a good fishing tour rather than worrying about other things. The captain on board knows about feasible locations where you will find a good catch. If you are a keen learner and anxious to explore more about sea then deep sea fishing is perfect for you. You get to learn a lot more in deep sea fishing than normal sea shore fishing.
What causes nitrogen narcosis in scuba divers?
The simple answer is the partial pressure of nitrogen being breathed. The deeper a diver goes, the greater the partial pressure of nitrogen in the air being breathed due to the increased pressure from being deeper. There is also a debate as to whether oxygen contributes to narcosis. But for a more indepth answer ... I don't think anyone really knows why it happens and last I knew there were different theories out there. Perhaps some medical people can jump in here some.
What gas is in scuba diving tanks?
The majority of gas used in most SCUBA tanks is compressed air. This air is composed of the same elements everywhere - 21% Oxygen 79% Nitrogen. Advanced SCUBA divers may use an "enhanced" mixture of 32% (up to about 40%) Oxygen with the balance being Nitrogen. The number of divers who use a mixture like this is about 2 to 5% of all certified divers. Less than 1% of all divers may use a special Tri-mix of some rather exotic gases to allow very deep dives - however, it takes years of instruction and training to use these exotic mixes.
Can scuba diving be done without training?
No. Scuba diving in dangerous, there is no way of doing it without an experieced diver giving you extensive training. Trying to dive without training is just an expensive way of killing yourself.
What are common depths for experienced scuba divers?
The certification levels for PADI (Professional Association of Dive Instructors) are as follows:
*Junior Open Water Diver---minimum age of 10 and the diver cannot go below 45 feet
*Basic Open Water Certification--minimum age of 12 and the diver can go to the safe distance of 132 feet
*Advanced Open Water Certification--minimum age of 15
*Rescue Diver--minimum age of 18
*Divemaster
*Scuba Instructor--the diver is licensed to certify other divers.
There are also many specialty courses that one can take, such as wreck diving, deep diving, nitrox diving, search and recovery, and underwater photography.
How do pearl divers adapt their bodies to the ocean?
By wearing a divers suit that helps keep acontrolon their body temperature. Also byadaptingto high pressure. Holding their breath for a long time will also allow your lungs to expand and hold for a longeramountof time.
Wetsuits are suppose to keep you warm in the ocean or cold water. They keep you warm by creating a thin layer of water between your skin and the wet suit. Your body heat warms up this thin layer of water keeping you warm.
http://www.wetsuits.net
Can you watch nrl live on the computer?
It's easy to watch Heineken Cup Rugby online at no cost. WiziWigTV shows the series for free, as does VIPBox, VIPBox has a few versions, original and best version for quality is vipleague.se or vipbox.tv Try one of these sites and enjoy the game!
How much training is needed for scuba diving?
You Need to complete an open water course from your local dice shop. This consists of a classroom portion where you learn safety and other things. A pool portion where you apply these things in a safe environment. And an open water dive section where you are tested on what you were taught. After completing this you will be given a c card this will allow you to buy scuba equipment air refills and go on dive trips. Also you can only dive 60 ft. Completing a deep sea diving course will give you 130 ft. This is the limit for recreational divers anything deeper and you may pass out or worse from the pressurized nitrogen in your tank
